Fighting Flames Air Force Airman Lucas Shelton douses a training fire at a controlled structure burn during Northern Strike in Alpena, Mich., Aug. 14, 2023. The exercise is designed to build interoperability and strengthen partnerships in an all-domain environment. SHARE IMAGE: Download Image: Full Size (0.85 MB) Tags: air force, Northern Strike Photo By: Army National Guard Staff Sgt. Nicholas Oposnow VIRIN: 230814-Z-RF868-1003M.JPG Photo Gallery